Definitions for photoluminescence
ˌfoʊ təˌlu məˈnɛs ənspho·to·lu·mi·nes·cence

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1. Photoluminescenceadjective

   Luminescence induced by exposure to light waves in the infrared to ultraviolet range.

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1. photoluminescencenoun

   luminescence following the absorption of a photon.

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1. Photoluminescence

   Photoluminescence (abbreviated as PL) is light emission from any form of matter after the absorption of photons (electromagnetic radiation). It is one of many forms of luminescence (light emission) and is initiated by photoexcitation (i.e. photons that excite electrons to a higher energy level in an atom), hence the prefix photo-. Following excitation, various relaxation processes typically occur in which other photons are re-radiated. Time periods between absorption and emission may vary: ranging from short femtosecond-regime for emission involving free-carrier plasma in inorganic semiconductors up to milliseconds for phosphoresence processes in molecular systems; and under special circumstances delay of emission may even span to minutes or hours. Observation of photoluminescence at a certain energy can be viewed as an indication that an electron populated an excited state associated with this transition energy. While this is generally true in atoms and similar systems, correlations and other more complex phenomena also act as sources for photoluminescence in many-body systems such as semiconductors. A theoretical approach to handle this is given by the semiconductor luminescence equations.

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1. Photoluminescence

   Photoluminescence describes the phenomenon of light emission from any form of matter after the absorption of photons. It is one of many forms of luminescence and is initiated by photoexcitation, hence the prefix photo-. The excitation typically undergoes various relaxation processes and then photons are re-radiated. The period between absorption and emission can be extremely short: it ranges from the femtosecond-regime for the emission from, e.g., free-carrier plasma in inorganic semiconductors up to milliseconds for phosphorescent processes in molecular systems; however, it can also be extended into minutes or hours under special circumstances. The observation of photoluminescence at a certain energy can be seen most-straightforwardly as indication of population of the state associated with this transition energy. While this is generally true in atoms and similar systems, correlations and other more complex phenomena also act as sources for photoluminescence in many-body systems such as semiconductors. A theoretical approach to handle this is given by the semiconductor luminescence equations.

How to pronounce photoluminescence?

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Numerology

1. Chaldean Numerology

   The numerical value of photoluminescence in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of photoluminescence in Pythagorean Numerology is: 8

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References

1. ^ GCIDE
   https://gcide.gnu.org.ua/?q=photoluminescence
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Photoluminescence
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Photoluminescence
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=photoluminescence